<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理 </el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮 -->
      <el-row>
        <el-col
          ><el-button @click="addRolesDialogVisible = true" type="primary"
            >添加角色</el-button
          ></el-col
        >
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template v-slot:default="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightByid(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级权限 -->
              <el-col :span="19">
                <!-- 通过 for 循环嵌套二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      closable
                      @close="removeRightByid(scope.row, item2.id)"
                      type="success"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      @close="removeRightByid(scope.row, item3.id)"
                      closable
                      type="warning"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                    >
                      {{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>

            <!-- <pre>
                {{ scope.row }}
                </pre -->
          </template>
        </el-table-column>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleDesc" label="角色描述"></el-table-column>
        <el-table-column width="300px" label="操作">
          <template v-slot:default="scope">
            <el-button
              @click="showEditDialog(scope.row.id)"
              type="primary"
              size="mini"
              icon="el-icon-edit"
              >编辑</el-button
            >
            <el-button
              type="danger"
              size="mini"
              icon="el-icon-delete"
              @click="removeUserByid(scope.row.id)"
              >删除</el-button
            >
            <el-button
              type="warning"
              size="mini"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 添加角色对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addRolesDialogVisible"
      width="50%"
      @close="addRolesDialogClosed"
    >
      <!-- 内容主题区域 -->
      <el-form
        :model="addRolesForm"
        :rules="addRolesFormRules"
        label-width="70x"
        ref="addRolesFormRef"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRolesForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRolesForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRolesDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改角色对话框 -->
    <el-dialog
      title="修改角色"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="addRolesFormRules"
        ref="editFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRolesInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="setRightdialogVisible"
      width="50%"
      @close="setRightdialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        show-checkbox
        :data="rightsList"
        :props="treeProps"
        node-key="id"
        :default-expand-all="true"
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightdialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allorRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //所有角色列表数据
      rolesList: [],
      //控制添加角色对话框的可见性
      addRolesDialogVisible: false,
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //添加角色的表单数据
      addRolesForm: {
        roleName: "",
        roleDesc: "",
      },
      addRolesFormRules: {
        roleName: [
          { required: true, message: "请输入角色名", trigger: "blur" },
          {
            min: 1,
            max: 10,
            message: "用户名在1~10个字符之间",
            trigger: "blur",
          },
        ],
      },
      //查询到的角色信息对象
      editForm: {},
      //控制分配权限对话框
      setRightdialogVisible: false,
      //所有权限的数据
      rightsList: [],
      //树形控件属性的绑定对象
      treeProps: {
        label: "authName",
        children: "children",
      },
      //默认选中的节点id值
      defKeys: [],
      //当前将要分配权限的 roleId
      roleId: "",
    };
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      //  console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.$message.success("获取角色列表成功");
      this.rolesList = res.data;
      //   console.log(this.rolesList);
    },
    //监听用户对话框的关闭事件
    addRolesDialogClosed() {
      this.$refs.addRolesFormRef.resetFields();
    },
    //点击按钮添加新角色
    addRoles() {
      this.$refs.addRolesFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post("roles", this.addRolesForm);
        // console.log(res);
        if (res.meta.status !== 201) return this.$message.error("添加角色失败");
        this.$message.success("添加角色成功");
        this.addRolesDialogVisible = false;
        this.getRolesList();
      });
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 展示编辑角色的对话框
    async showEditDialog(id) {
      //  console.log(id)
      const { data: res } = await this.$http.get("roles/" + id);
      // console.log(res)
      if (res.meta.status !== 200)
        return this.$message.error("查询角色信息失败");
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //确认修改信息
    editRolesInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid)
        if (!valid) return;
        console.log(this.editForm);
        //发起修改角色信息请求
        const { data: res } = await this.$http.put(
          "roles/" + this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc,
          }
        );
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error("更新角色信息失败!");
        }
        //关闭对话框
        this.editDialogVisible = false;
        //刷新数据列表
        this.getRolesList();
        //提示修改成功
        this.$message.success("更新角色信息成功");
      });
    },
    //根据id删除对应的角色
    async removeUserByid(id) {
      //   console.log(id);
      //弹框询问是否删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该角色, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      //如果用户确认删除则返回字符串 confirm
      //如果用户取消删除则返回字符串 cancel
      // console.log(confirmResult);
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      // console.log('确认删除');
      const { data: res } = await this.$http.delete("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("删除角色失败");
      }
      this.$message.success("删除用户成功");
      this.getRolesList();
    },
    //根据id删除对应的权限
    async removeRightByid(role, rightId) {
      //弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);

      if (confirmResult != "confirm") {
        return this.$message.info("取消了删除");
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败");
      }
      this.$message.success("删除权限成功");
      role.children = res.data;
    },
    //展示分配权限对话框
    async showSetRightDialog(role) {
      this.roleId = role.id;
      //获取所有权限数据
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status !== 200) {
        return this.$message.error("获取权限数据失败");
      }
      //把获取到的1权限数据保存到 rightsList 中
      this.rightsList = res.data;

      //   console.log(this.rightsList);

      //递归获取三级节点的Id
      this.getleafKeys(role, this.defKeys);

      this.setRightdialogVisible = true;
    },
    //通过递归的形式,获取角色下所有三级权限的id,并保存到 defKeys 数组
    getleafKeys(node, arr) {
      //如果当前的 node 节点不包括 children 属性,则是三级节点
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach((item) => this.getleafKeys(item, arr));
    },
    //监听分配权限对话框的关闭事件
    setRightdialogClosed() {
      this.defKeys = [];
    },
    //点击为角色陪陪权限
    async allorRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ];
      // console.log(keys);

      const idStr = keys.join(",");
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("分配权限失败");
      }
      this.$message.success("分配权限成功");
      this.getRolesList();
      this.setRightdialogVisible = false;
    },
  },
  created() {
    this.getRolesList();
  },
};
</script>

<style lang='less' scope>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>